mirror of https://github.com/poanetwork/quorum.git
471 lines
14 KiB
Go
471 lines
14 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package types
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import (
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"container/heap"
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"errors"
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"fmt"
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"io"
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"math/big"
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"sync/atomic"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/rlp"
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)
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//go:generate gencodec -type txdata -field-override txdataMarshaling -out gen_tx_json.go
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var (
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ErrInvalidSig = errors.New("invalid transaction v, r, s values")
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errNoSigner = errors.New("missing signing methods")
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)
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// deriveSigner makes a *best* guess about which signer to use.
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func deriveSigner(V *big.Int) Signer {
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if V.Sign() != 0 && isProtectedV(V) {
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return NewEIP155Signer(deriveChainId(V))
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} else {
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return HomesteadSigner{}
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}
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}
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type Transaction struct {
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data txdata
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// caches
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hash atomic.Value
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size atomic.Value
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from atomic.Value
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}
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type txdata struct {
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AccountNonce uint64 `json:"nonce" gencodec:"required"`
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Price *big.Int `json:"gasPrice" gencodec:"required"`
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GasLimit uint64 `json:"gas" gencodec:"required"`
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Recipient *common.Address `json:"to" rlp:"nil"` // nil means contract creation
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Amount *big.Int `json:"value" gencodec:"required"`
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Payload []byte `json:"input" gencodec:"required"`
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// Signature values
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V *big.Int `json:"v" gencodec:"required"`
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R *big.Int `json:"r" gencodec:"required"`
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S *big.Int `json:"s" gencodec:"required"`
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// This is only used when marshaling to JSON.
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Hash *common.Hash `json:"hash" rlp:"-"`
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}
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type txdataMarshaling struct {
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AccountNonce hexutil.Uint64
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Price *hexutil.Big
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GasLimit hexutil.Uint64
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Amount *hexutil.Big
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Payload hexutil.Bytes
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V *hexutil.Big
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R *hexutil.Big
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S *hexutil.Big
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}
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func NewTransaction(nonce uint64, to common.Address, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction {
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return newTransaction(nonce, &to, amount, gasLimit, gasPrice, data)
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}
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func NewContractCreation(nonce uint64, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction {
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return newTransaction(nonce, nil, amount, gasLimit, gasPrice, data)
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}
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func newTransaction(nonce uint64, to *common.Address, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction {
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if len(data) > 0 {
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data = common.CopyBytes(data)
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}
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d := txdata{
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AccountNonce: nonce,
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Recipient: to,
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Payload: data,
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Amount: new(big.Int),
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GasLimit: gasLimit,
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Price: new(big.Int),
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V: new(big.Int),
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R: new(big.Int),
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S: new(big.Int),
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}
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if amount != nil {
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d.Amount.Set(amount)
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}
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if gasPrice != nil {
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d.Price.Set(gasPrice)
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}
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return &Transaction{data: d}
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}
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// ChainId returns which chain id this transaction was signed for (if at all)
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func (tx *Transaction) ChainId() *big.Int {
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return deriveChainId(tx.data.V)
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}
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// Protected returns whether the transaction is protected from replay protection.
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func (tx *Transaction) Protected() bool {
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return isProtectedV(tx.data.V)
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}
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func isProtectedV(V *big.Int) bool {
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if V.BitLen() <= 8 {
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v := V.Uint64()
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return v != 27 && v != 28
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}
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// anything not 27 or 28 are considered unprotected
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return true
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}
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// EncodeRLP implements rlp.Encoder
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func (tx *Transaction) EncodeRLP(w io.Writer) error {
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return rlp.Encode(w, &tx.data)
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}
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// DecodeRLP implements rlp.Decoder
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func (tx *Transaction) DecodeRLP(s *rlp.Stream) error {
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_, size, _ := s.Kind()
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err := s.Decode(&tx.data)
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if err == nil {
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tx.size.Store(common.StorageSize(rlp.ListSize(size)))
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}
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return err
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}
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// MarshalJSON encodes the web3 RPC transaction format.
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func (tx *Transaction) MarshalJSON() ([]byte, error) {
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hash := tx.Hash()
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data := tx.data
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data.Hash = &hash
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return data.MarshalJSON()
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}
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// UnmarshalJSON decodes the web3 RPC transaction format.
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func (tx *Transaction) UnmarshalJSON(input []byte) error {
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var dec txdata
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if err := dec.UnmarshalJSON(input); err != nil {
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return err
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}
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var V byte
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if isProtectedV(dec.V) {
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chainID := deriveChainId(dec.V).Uint64()
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V = byte(dec.V.Uint64() - 35 - 2*chainID)
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} else {
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V = byte(dec.V.Uint64() - 27)
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}
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if !crypto.ValidateSignatureValues(V, dec.R, dec.S, false) {
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return ErrInvalidSig
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}
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*tx = Transaction{data: dec}
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return nil
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}
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func (tx *Transaction) Data() []byte { return common.CopyBytes(tx.data.Payload) }
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func (tx *Transaction) Gas() uint64 { return tx.data.GasLimit }
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func (tx *Transaction) GasPrice() *big.Int { return new(big.Int).Set(tx.data.Price) }
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func (tx *Transaction) Value() *big.Int { return new(big.Int).Set(tx.data.Amount) }
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func (tx *Transaction) Nonce() uint64 { return tx.data.AccountNonce }
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func (tx *Transaction) CheckNonce() bool { return true }
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// To returns the recipient address of the transaction.
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// It returns nil if the transaction is a contract creation.
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func (tx *Transaction) To() *common.Address {
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if tx.data.Recipient == nil {
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return nil
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}
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to := *tx.data.Recipient
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return &to
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}
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// Hash hashes the RLP encoding of tx.
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// It uniquely identifies the transaction.
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func (tx *Transaction) Hash() common.Hash {
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if hash := tx.hash.Load(); hash != nil {
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return hash.(common.Hash)
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}
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v := rlpHash(tx)
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tx.hash.Store(v)
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return v
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}
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func (tx *Transaction) Size() common.StorageSize {
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if size := tx.size.Load(); size != nil {
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return size.(common.StorageSize)
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}
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c := writeCounter(0)
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rlp.Encode(&c, &tx.data)
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tx.size.Store(common.StorageSize(c))
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return common.StorageSize(c)
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}
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// AsMessage returns the transaction as a core.Message.
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//
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// AsMessage requires a signer to derive the sender.
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//
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// XXX Rename message to something less arbitrary?
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func (tx *Transaction) AsMessage(s Signer) (Message, error) {
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msg := Message{
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nonce: tx.data.AccountNonce,
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gasLimit: tx.data.GasLimit,
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gasPrice: new(big.Int).Set(tx.data.Price),
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to: tx.data.Recipient,
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amount: tx.data.Amount,
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data: tx.data.Payload,
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checkNonce: true,
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}
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var err error
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msg.from, err = Sender(s, tx)
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return msg, err
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}
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// WithSignature returns a new transaction with the given signature.
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// This signature needs to be formatted as described in the yellow paper (v+27).
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func (tx *Transaction) WithSignature(signer Signer, sig []byte) (*Transaction, error) {
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r, s, v, err := signer.SignatureValues(tx, sig)
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if err != nil {
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return nil, err
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}
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cpy := &Transaction{data: tx.data}
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cpy.data.R, cpy.data.S, cpy.data.V = r, s, v
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return cpy, nil
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}
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// Cost returns amount + gasprice * gaslimit.
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func (tx *Transaction) Cost() *big.Int {
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total := new(big.Int).Mul(tx.data.Price, new(big.Int).SetUint64(tx.data.GasLimit))
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total.Add(total, tx.data.Amount)
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return total
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}
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func (tx *Transaction) RawSignatureValues() (*big.Int, *big.Int, *big.Int) {
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return tx.data.V, tx.data.R, tx.data.S
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}
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func (tx *Transaction) String() string {
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var from, to string
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if tx.data.V != nil {
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// make a best guess about the signer and use that to derive
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// the sender.
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signer := deriveSigner(tx.data.V)
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if f, err := Sender(signer, tx); err != nil { // derive but don't cache
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from = "[invalid sender: invalid sig]"
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} else {
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from = fmt.Sprintf("%x", f[:])
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}
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} else {
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from = "[invalid sender: nil V field]"
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}
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if tx.data.Recipient == nil {
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to = "[contract creation]"
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} else {
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to = fmt.Sprintf("%x", tx.data.Recipient[:])
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}
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enc, _ := rlp.EncodeToBytes(&tx.data)
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return fmt.Sprintf(`
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TX(%x)
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Contract: %v
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From: %s
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To: %s
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Nonce: %v
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GasPrice: %#x
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GasLimit %#x
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Value: %#x
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Data: 0x%x
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V: %#x
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R: %#x
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S: %#x
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Hex: %x
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`,
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tx.Hash(),
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tx.data.Recipient == nil,
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from,
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to,
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tx.data.AccountNonce,
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tx.data.Price,
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tx.data.GasLimit,
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tx.data.Amount,
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tx.data.Payload,
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tx.data.V,
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tx.data.R,
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tx.data.S,
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enc,
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)
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}
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// Transactions is a Transaction slice type for basic sorting.
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type Transactions []*Transaction
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// Len returns the length of s.
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func (s Transactions) Len() int { return len(s) }
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// Swap swaps the i'th and the j'th element in s.
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func (s Transactions) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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// GetRlp implements Rlpable and returns the i'th element of s in rlp.
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func (s Transactions) GetRlp(i int) []byte {
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enc, _ := rlp.EncodeToBytes(s[i])
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return enc
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}
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// TxDifference returns a new set t which is the difference between a to b.
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func TxDifference(a, b Transactions) (keep Transactions) {
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keep = make(Transactions, 0, len(a))
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remove := make(map[common.Hash]struct{})
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for _, tx := range b {
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remove[tx.Hash()] = struct{}{}
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}
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for _, tx := range a {
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if _, ok := remove[tx.Hash()]; !ok {
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keep = append(keep, tx)
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}
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}
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return keep
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}
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// TxByNonce implements the sort interface to allow sorting a list of transactions
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// by their nonces. This is usually only useful for sorting transactions from a
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// single account, otherwise a nonce comparison doesn't make much sense.
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type TxByNonce Transactions
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func (s TxByNonce) Len() int { return len(s) }
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func (s TxByNonce) Less(i, j int) bool { return s[i].data.AccountNonce < s[j].data.AccountNonce }
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func (s TxByNonce) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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// TxByPrice implements both the sort and the heap interface, making it useful
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// for all at once sorting as well as individually adding and removing elements.
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type TxByPrice Transactions
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func (s TxByPrice) Len() int { return len(s) }
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func (s TxByPrice) Less(i, j int) bool { return s[i].data.Price.Cmp(s[j].data.Price) > 0 }
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func (s TxByPrice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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func (s *TxByPrice) Push(x interface{}) {
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*s = append(*s, x.(*Transaction))
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}
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func (s *TxByPrice) Pop() interface{} {
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old := *s
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n := len(old)
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x := old[n-1]
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*s = old[0 : n-1]
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return x
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}
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// TransactionsByPriceAndNonce represents a set of transactions that can return
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// transactions in a profit-maximizing sorted order, while supporting removing
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// entire batches of transactions for non-executable accounts.
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type TransactionsByPriceAndNonce struct {
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txs map[common.Address]Transactions // Per account nonce-sorted list of transactions
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heads TxByPrice // Next transaction for each unique account (price heap)
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signer Signer // Signer for the set of transactions
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}
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// NewTransactionsByPriceAndNonce creates a transaction set that can retrieve
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// price sorted transactions in a nonce-honouring way.
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//
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// Note, the input map is reowned so the caller should not interact any more with
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// if after providing it to the constructor.
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func NewTransactionsByPriceAndNonce(signer Signer, txs map[common.Address]Transactions) *TransactionsByPriceAndNonce {
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// Initialize a price based heap with the head transactions
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heads := make(TxByPrice, 0, len(txs))
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for _, accTxs := range txs {
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heads = append(heads, accTxs[0])
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// Ensure the sender address is from the signer
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acc, _ := Sender(signer, accTxs[0])
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txs[acc] = accTxs[1:]
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}
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heap.Init(&heads)
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// Assemble and return the transaction set
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return &TransactionsByPriceAndNonce{
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txs: txs,
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heads: heads,
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signer: signer,
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}
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}
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// Peek returns the next transaction by price.
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func (t *TransactionsByPriceAndNonce) Peek() *Transaction {
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if len(t.heads) == 0 {
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return nil
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}
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return t.heads[0]
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}
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// Shift replaces the current best head with the next one from the same account.
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func (t *TransactionsByPriceAndNonce) Shift() {
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acc, _ := Sender(t.signer, t.heads[0])
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if txs, ok := t.txs[acc]; ok && len(txs) > 0 {
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t.heads[0], t.txs[acc] = txs[0], txs[1:]
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heap.Fix(&t.heads, 0)
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} else {
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heap.Pop(&t.heads)
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}
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}
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// Pop removes the best transaction, *not* replacing it with the next one from
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// the same account. This should be used when a transaction cannot be executed
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// and hence all subsequent ones should be discarded from the same account.
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func (t *TransactionsByPriceAndNonce) Pop() {
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heap.Pop(&t.heads)
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}
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// Message is a fully derived transaction and implements core.Message
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//
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// NOTE: In a future PR this will be removed.
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type Message struct {
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to *common.Address
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from common.Address
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nonce uint64
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amount *big.Int
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gasLimit uint64
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gasPrice *big.Int
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data []byte
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checkNonce bool
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}
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func NewMessage(from common.Address, to *common.Address, nonce uint64, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte, checkNonce bool) Message {
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return Message{
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from: from,
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to: to,
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nonce: nonce,
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amount: amount,
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gasLimit: gasLimit,
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gasPrice: gasPrice,
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data: data,
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checkNonce: checkNonce,
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}
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}
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func (m Message) From() common.Address { return m.from }
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func (m Message) To() *common.Address { return m.to }
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func (m Message) GasPrice() *big.Int { return m.gasPrice }
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func (m Message) Value() *big.Int { return m.amount }
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func (m Message) Gas() uint64 { return m.gasLimit }
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func (m Message) Nonce() uint64 { return m.nonce }
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func (m Message) Data() []byte { return m.data }
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func (m Message) CheckNonce() bool { return m.checkNonce }
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